Aim: The study was designed to inspect the upper first molar movement in all planes during distalization.
Method: A newly designed distalizer was used. The idea of the latter was to distalize upper molars by force application from both the buccal and palatal sides. Force was applied as close as possible to the center of resistance (trifurcation). The aim was to bodily move the molar. Cone beam CTs were taken before and after distalization. The upper first molars and the tooth movement were inspected in the three planes.
Conclusion: The bidirectional distalizer proved to be efficient in molar distalization.